Water-proof facility of suspended scaffold

Abstract

To increase durability of suspending chains of a suspended scaffold and to increase safety of work passages.SOLUTION: A water-proof facility 10 of a suspended scaffold 1 comprises: a protective member 11 that individually covers suspended chains 2 disposed below a point P where polluted water is generated in a structure S; a suspended chain curing sheet 12 that is disposed between the point where polluted water is generated in the structure S and the suspended chain 2 to which the protective member 11 is attached; and a drainage facility 14 that discharges polluted water generated from the structure S and flowing down over the suspended chain curing sheet 12, from the suspended scaffold 1.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a waterproofing system installed on a suspended scaffolding that is temporarily set up for work in a structure where polluted water is generated during construction. [Background technology]

[0002] Conventionally, when carrying out repair work on structures such as elevated expressways and viaducts, suspended scaffolding is temporarily set up to carry out work below decks or bridge girders at high altitudes. Normally, this type of suspended scaffolding is set up by connecting multiple scaffolding plates horizontally to the lower ends of multiple suspension chains attached to the bottom of the structure (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-75855 Summary of the Invention [Problem to be solved by the invention]

[0004] However, as described above, when constructing a structure on which a suspended scaffolding is installed, polluted water is generated during the work of cutting the tip of the deck with a wire saw or scraping the deck with a water jet. The polluted water generated during this work flows down onto the suspension chains and scaffolding boards installed below the structure, which may corrode and damage the suspension chains or make the work path on the scaffolding boards slippery, thereby reducing the safety of the work.

[0005] The present invention has been made to solve the above-mentioned problems, and has an object to provide a water-proofing system for suspended scaffolding that can prevent polluted water generated during the construction of a structure from flowing down into the suspension chains or work passages on the scaffolding planks, thereby increasing the durability of the suspension chains of the suspended scaffolding and increasing the safety of the work passages. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the present invention is a water-proofing equipment installed on a hanging scaffold having a plurality of hanging chains whose upper ends are attached to a structure where polluted water is generated during construction and a plurality of scaffolding boards connected to the lower ends of the hanging chains, characterized in that the equipment comprises protective members that individually cover the hanging chains and are positioned below the point where polluted water is generated in the structure, a protective sheet for the hanging chains that is positioned between the point where polluted water is generated in the structure and the hanging chains to which the protective member is attached, and a drainage equipment that discharges polluted water generated from the structure that flows down over the protective sheet for the hanging chains from the hanging scaffold.

[0007] The above-mentioned waterproofing equipment for suspended scaffolding according to the present invention may further include a protective sheet for a work passage arranged between a point where polluted water is generated in the structure and a work passage on the scaffolding board, and the drainage equipment may discharge, from the suspended scaffolding, the polluted water generated from the structure which flows down on the protective sheet for the work passage.

[0008] In the waterproofing equipment for the suspended scaffolding of the present invention described above, the lower end of the protective sheet for the suspension chain and the lower end of the protective sheet for the work passage are connected, and the connected lower end may be inclined toward the drainage equipment.

[0009] In the above-mentioned waterproofing system for suspended scaffolding according to the present invention, the protective member may be formed by processing a discarded fire hose and may be detachably attached to the suspension chain.

[0010] The above-mentioned waterproofing equipment for suspended scaffolding according to the present invention may further comprise a main rope that is installed along the structure below the point where the polluted water is generated, and a locking member that is installed at the upper end of the protective sheet for the suspension chain so as to be slidable along the main rope. Effect of the Invention

[0011] According to the present invention, various excellent effects can be obtained, such as preventing polluted water generated during construction of a structure from flowing down into the suspension chains or work passages on the scaffolding planks, thereby increasing the durability of the suspension chains of the suspended scaffolding and improving the safety of the work passages. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a front view showing a waterproofing system for a suspended scaffold according to an embodiment of the present invention. [Diagram 2] FIG. 1 is a front view showing a first procedure for constructing a structure using a waterproof system for a suspended scaffold according to an embodiment of the present invention. [Diagram 3] FIG. 11 is a front view showing a second procedure for constructing a structure using a waterproof system for a suspended scaffold according to an embodiment of the present invention. [Figure 4] FIG. 11 is a front view showing a third procedure for constructing a structure using a waterproof system for a suspended scaffold according to an embodiment of the present invention. [Diagram 5] FIG. 11 is a front view showing a fourth procedure for constructing a structure using a waterproof system for a suspended scaffold according to an embodiment of the present invention. [Figure 6] FIG. 11 is a front view showing a fifth procedure for constructing a structure using a waterproof system for a suspended scaffold according to an embodiment of the present invention. [Figure 7] FIG. 11 is a front view showing a sixth procedure for constructing a structure using a waterproof system for a suspended scaffold according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, a waterproof system for suspended scaffolding according to an embodiment of the present invention will be described with reference to the attached drawings. Here, Fig. 1 is a front view showing the waterproof system for suspended scaffolding according to an embodiment of the present invention, and Figs. 2 to 7 are front views showing the first to sixth steps of constructing a structure using the waterproof system for suspended scaffolding according to an embodiment of the present invention, respectively. In the following description, for convenience, the near side of each figure is the front side, and the left and right directions are described based on the direction seen from the front side.

[0014] The suspended scaffolding 1 in the embodiment of the present invention includes a plurality of suspension chains 2 whose upper ends are fixed to a structure S where polluted water is generated during construction, and a plurality of scaffolding plates 3 connected to the lower ends of the respective suspension chains 2. Although Figs. 2 to 6 only show that a plurality of suspension chains 2 and scaffolding plates 3 are arranged in the left-right direction, a plurality of suspension chains 2 and scaffolding plates 3 are also arranged in the front-rear direction. In addition, a temporary protective fence 4 is erected at the tip (right side in the figure) on the scaffolding plate 3 of the suspended scaffolding 1, and a temporary work scaffolding 5 is erected inside the temporary protective fence 4 (left side in the figure). Furthermore, a waterproofing system 10 (see Figs. 1, 4, and 5) is installed on the scaffolding plate 3 of the suspended scaffolding 1, inside the temporary work scaffolding 5 (left side in the figure).

[0015] As shown in Figures 1, 4 and 5, the waterproofing equipment 10 comprises a protective member 11 that individually covers the hanging chain 2 arranged below the point P where polluted water is generated in the structure S, a protective sheet for the hanging chain 12 that is arranged between the point P where polluted water is generated in the structure S and the hanging chain 2 to which the protective member 11 is attached, a protective sheet for the work passage 13 that is arranged between the point P where polluted water is generated in the structure S and the work passage R on the scaffolding board 3, and a drainage equipment 14 that discharges polluted water generated from the structure S that flows down over the protective sheet for the hanging chain 12 and the protective sheet for the work passage 13 from the hanging scaffolding 1.

[0016] The protective member 11 is, for example, a recycled, processed fire hose that is to be discarded, and is detachably attached to the suspension chain 2 by cutting the fire hose and sewing a hook-and-loop fastener to the cut portion. Note that the protective member 11 can be made of any material other than the above-mentioned fire hose, so long as it is made of a water-resistant, flexible material with a predetermined strength.

[0017] The protective sheet 12 for the hanging chain and the protective sheet 13 for the work passage are made of a synthetic resin sheet such as a blue sheet. As shown in FIG. 1, a plurality of ring-shaped locking members 15 are provided at a predetermined interval on the upper end of the protective sheet 12 for the hanging chain. A main rope 16 is attached to the upper end of the hanging chain 2 in the front-rear direction so as to follow the structure S below the location P where the polluted water is generated, and the main rope 16 is inserted into the locking member 15 of the protective sheet 12 for the hanging chain. As a result, the protective sheet 12 for the chain is provided so as to be slidable in the front-rear direction along the main rope 16. The upper end of the protective sheet 13 for the work passage is tied to the temporary scaffolding 5 for work via a wire 17 or the like. In this embodiment, a blue sheet that is easily available at a construction site is used as the protective sheet 12 for the hanging chain and the protective sheet 13 for the work passage. However, other materials can be used as long as they are sheet-like and difficult to pass water through.

[0018] As shown in Figs. 1, 4 and 5, the drainage system 14 includes a polluted water tank 18 for temporarily storing polluted water, and a drainage treatment pump 20 for pumping the polluted water stored in the polluted water tank 18 to a predetermined location via a hose 19. The polluted water tank 18 is open at the top, and may be, for example, a plastering boat. The lower end of the hanging chain protective sheet 12 and the lower end of the work passage protective sheet 13 are connected by adhesive tape or the like, and the connected lower end is inclined toward the polluted water tank 18 (for example, the front side) and is accommodated in the polluted water tank 18. In this embodiment, a plastering boat that is easily available at a construction site is used as the polluted water tank 18, but various types of water tanks can be used as long as they have a predetermined water storage capacity.

[0019] Next, a procedure for constructing a structure S using the waterproof system 10 of the suspended scaffolding 1 according to the embodiment of the present invention will be described with reference to Fig. 2 to Fig. 7. In the following description, a case where the waterproof system 10 of the suspended scaffolding 1 is used for widening construction of a deck F of an elevated expressway will be described as an example.

[0020] First, as shown in Fig. 2, a suspended scaffolding 1 is installed below a deck F in a predetermined section that has been planned in advance, and a temporary protective fence 4 and a temporary work scaffolding 5 are installed on the scaffolding board 3 of the suspended scaffolding 1. A temporary protective fence 22 is also erected on the deck F inside (left side in the figure) of an existing wall parapet 21 installed at the end of the deck F, and workers are positioned on the temporary work scaffolding 5. In this state, the existing sound insulation wall 23 and steel protective fence 24 erected on the wall parapet 21 are removed and carried away by a crane 25 or the like.

[0021] Next, a worker on the work scaffold 5 uses a core machine (not shown) to drill suspension holes 27 (see FIG. 3) horizontally in the existing wall balustrade 21. After that, the worker on the work scaffold 5 wraps the wall balustrade 21 around a wire rope 28 (see FIG. 3) inserted into the suspension hole 27, and uses a wire saw machine (not shown) to cut the wall balustrade 21 horizontally along the upper surface of the deck F.

[0022] As shown in Figure 3, the wall parapet 21 that has been cut off from the deck F is suspended by a crane 25 via a wire rope 28 and carried to a prescribed location. Note that polluted water generated during the drilling of the suspension holes 27 and during the cutting of the existing wall parapet 21 is pumped to a prescribed location and discharged by a drainage treatment pump 29 or the like installed on the temporary work scaffold 5.

[0023] Next, as shown in Fig. 4, after installing the waterproofing equipment 10 on the suspended scaffolding 1, a worker on the temporary work scaffolding 5 uses a core machine (not shown) to drill a suspension hole 32 in the vertical direction in the tip portion 30 of the deck F. Thereafter, as shown in Fig. 4, a wire saw machine 31 is fixed onto the deck F and a dedicated protective net 26, etc. is installed, and then the tip portion 30 of the deck F (the shaded portion in Fig. 4) is cut along the vertical cut surface V.

[0024] Next, as shown in Fig. 5, the tip portion 30 of the deck F (the shaded portion in Fig. 5) is wrapped around the body by the wire rope 28 inserted into the hanging hole 32 and is suspended and fixed by the crane 25, and then the tip portion 30 of the deck F is cut off using a wire saw machine 31. The tip portion 30 of the deck F that has been cut off in this manner is suspended by the crane 25 via the wire rope 28 and carried out to a prescribed location.

[0025] As shown by the dashed arrows in Figures 4 and 5, the polluted water generated during cutting work of the tip portion 30 of the deck F described above flows toward the polluted water tank 18 via the protective sheet for the hanging chain 12 and the protective sheet for the work passage 13, and is temporarily stored in the polluted water tank 18. After that, the polluted water is pumped to a designated location via a hose 19 by the drainage treatment pump 20 and discharged.

[0026] At this time, because a protective sheet 12 for the hanging chain is provided between the location P where the polluted water is generated and the hanging chain 2 to which the protective member 11 is attached, the hanging chain 2 does not come into contact with the polluted water. In addition, because the hanging chain 2 arranged below the location P where the polluted water is generated is individually wrapped by the protective member 11, even if the polluted water comes into contact with the protective member 11, the hanging chain 2 does not come into direct contact with the polluted water. Therefore, it is possible to reliably prevent the hanging chain 2 from corroding or being damaged due to contact with the polluted water.

[0027] In addition, a protective sheet 13 for the work passage is provided above the work passage R on the scaffolding board 3 below the location P where the polluted water is generated, so that the polluted water will not flow down into the work passage R, preventing workers from slipping or falling on the work passage R. This ensures the safety of workers on the work passage R and improves work efficiency.

[0028] Furthermore, by covering the suspension chain 2 with the protective member 11, it is possible to prevent a worker from being injured even if the worker comes into contact with the suspension chain 2, thereby avoiding the risk of a disaster. In addition, the protective member 11 is attached to the suspension chain 2 with a hook-and-loop fastener or the like so as to be easily detachable, so that the suspension chain 2 can be easily visually inspected.

[0029] Next, as shown in Fig. 6, workers attach resin anchors 33 to the vertical cut surface V of the deck F, and attach the precast rib 34 hoisted by the crane 25 to the vertical cut surface V. After that, workers fix the anchor bolts and nuts, and then fill the gaps with mortar.

[0030] Next, as shown in Figure 7, the PC plate 35 is lifted by the crane 25 (see Figure 6, etc.) and placed on the precast ribs 34, and the concrete deck 36 is poured on top of it. After that, a new wall parapet 37 is installed at the end of the concrete deck 36, and a soundproof wall 38 is installed on the wall parapet 37, after which the suspended scaffolding 1 and temporary protective fence 22 (see Figure 6, etc.) are removed, completing the widening work of the deck F in the specified section. Thereafter, similar work is carried out in succession for the other sections.

[0031] According to the water-proofing equipment 10 of the suspended scaffolding 1 according to the embodiment described above, the suspension chain protective sheet 12 is disposed between the polluted water generating point P of the structure S and the suspension chain 2 to which the protective member 11 is attached, so that the suspension chain 2 does not come into contact with the polluted water. In addition, the suspension chain 2 disposed below the polluted water generating point P of the structure S (F) is individually covered by the protective member 11, so that even if the polluted water flows down to the protective member 11, the suspension chain 2 does not come into direct contact with the polluted water. Therefore, it is possible to reliably prevent the suspension chain 2 from corroding or being damaged by contacting the polluted water. Furthermore, by covering the suspension chain 2 with the protective member 11, it is possible to prevent the worker from being injured even if the worker comes into contact with the suspension chain 2, and it is possible to avoid the risk of a disaster.

[0032] Furthermore, according to the waterproofing system 10 of the suspended scaffolding 1 according to the embodiment described above, a protective sheet 13 for the work passage is arranged between the location P of the structure S where the polluted water is generated and the work passage R on the scaffolding board 3, and it is possible to prevent the polluted water from flowing down into the work passage R, thereby preventing workers from slipping or falling on the work passage R. This ensures the safety of workers on the work passage R and improves work efficiency.

[0033] Furthermore, according to the waterproofing equipment 10 of the suspended scaffolding 1 in the above-mentioned embodiment, the lower end of the protective sheet for the hanging chain 12 and the lower end of the protective sheet for the work passage 13 are connected, and the connected lower end is arranged so as to be inclined toward the drainage equipment 14, so that polluted water that flows down onto the protective sheet for the hanging chain 12 or the protective sheet for the work passage 13 can be reliably discharged to a designated location by the drainage equipment 14.

[0034] Furthermore, according to the waterproofing system 10 of the suspended scaffolding 1 according to the embodiment described above, the protective member 11 is formed by reusing and processing a discarded water-resistant fire hose, so that the suspension chain 2 can be protected reliably and inexpensively. Also, since the protective member 11 is easily attached and detached to the suspension chain 2 by a hook-and-loop fastener, the suspension chain 2 can be easily visually inspected.

[0035] Furthermore, according to the waterproofing equipment 10 of the suspended scaffolding 1 in the embodiment described above, the chain protective sheet 12 is slidably arranged, via the locking member 15, on the main rope 16 that is arranged along the structure S below the point P where the polluted water is generated. Therefore, the chain protective sheet 12 can be easily moved to an appropriate location in accordance with the work generating the polluted water, thereby reliably preventing the suspension chain 2 from corroding or being damaged due to contact with the polluted water.

[0036] Furthermore, according to the waterproofing system 10 of the suspended scaffolding 1 according to the embodiment described above, the drainage system 14 can quickly and reliably drain the polluted water generated from the structure S to a predetermined location from the suspended scaffolding 1. Therefore, the working environment on the scaffolding board 3 can be kept in a good state, and the safety and working efficiency of the workers can be improved.

[0037] In the above description of the embodiment, the waterproofing equipment 10 of the suspended scaffolding 1 according to the present invention is described as being used in the widening work of the deck F of an elevated expressway. However, this is merely an example, and the present invention can also be used in other works that have space below, such as elevated expressways and viaducts.

[0038] Furthermore, the present invention can be modified as appropriate within the scope that does not contradict the gist or idea of ​​the invention that can be read from the claims and the entire specification, and waterproofing equipment for suspended scaffolding that involves such modifications is also included in the technical idea of ​​the present invention. [Explanation of symbols]

[0039] 1 Suspended scaffolding 2 Suspension chain 3 Scaffolding boards 10. Water-shielding equipment 11 Protective materials 12. Suspension chain protective sheet 13 Covering sheet for work passage 14 Drainage equipment 15 Locking member 16 Lifeline P Location of polluted water generation S structure

Claims

1. A water-shielding facility provided on a suspended scaffolding having a plurality of suspension chains whose upper ends are attached to a structure where polluted water is generated during construction, and a plurality of scaffolding boards connected to the lower ends of the suspension chains, A protective member that individually covers the suspension chain and is disposed below a location where polluted water is generated in the structure; A protective sheet for a hanging chain arranged between a location where polluted water is generated in the structure and the hanging chain to which the protective member is attached; A drainage system that drains polluted water generated from the structure and flowing down the protective sheet for the hanging chain from the hanging scaffolding; A waterproofing system for suspended scaffolding.

2. Further, a protective sheet for a work passage is provided between a place where polluted water is generated in the structure and the work passage on the scaffolding board, The water-proofing system for a suspended scaffolding according to claim 1, wherein the drainage system discharges polluted water generated from the structure and flowing down on the curing sheet for the work passage from the suspended scaffolding.

3. 3. A waterproofing system for a suspended scaffold as described in claim 2, wherein the lower end of the protective sheet for the suspension chain and the lower end of the protective sheet for the work passage are connected, and the connected lower ends are inclined toward the drainage system.

4. The waterproofing system for a suspended scaffold according to claim 1, wherein the protective member is formed by processing a discarded fire hose and is detachably attached to the suspension chain.

5. A lifeline provided along the structure below a location where the polluted water is generated; A locking member provided at the upper end of the protective sheet for the suspension chain so as to be slidable along the life rope; The waterproofing system for a suspended scaffold according to claim 1 .

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